line receivers. LM75124 Datasheet

LM75124 receivers. Datasheet pdf. Equivalent


Part LM75124
Description triple line receivers
Feature LM75124 triple line receivers Line Drivers/Receivers general description The LM75124 is designed t.
Manufacture National Semiconductor
Datasheet
Download LM75124 Datasheet


LM75124 triple line receivers Line Drivers/Receivers gener LM75124 Datasheet
Recommendation Recommendation Datasheet LM75124 Datasheet




LM75124
LM75124 triple line receivers
Line Drivers/Receivers
general description
The LM75124 is designed to meet the input/
output interface specifications for IBM System
360. It has built-in hysteresis on one input on
each of the three receivers to provide large noise
margin. The other inputs on each receiver are in
a standard TTL configuration. The LM75124 is
compatible with standard TTL logic and supply
voltage levels.
features
• Built-in input threshold hysteresis
• High speed .. typ propagation delay time 20 ns
• Independent channel strobes
• Input gating i'ncreases application flexibility
• Single 5.0V supply operation
• Plug-in replacement for the SN75124 and the
8T24
connection diagram and truth table
Dual-In-Line Package
vee IS IR IV 3A 3S 3R 3V
TOP VIEW
Order Number LM75124J
See Package 17
Order Number LM75124N
See Package 23
INPUTS
A Bt R
HHX
XXL
L XH
L XX
XL H
XL X
S
X
H
X
L
X
L
OUTPUT
Y
L
L
H
H
H
H
H = high level, L '" low level, X = Irrelevant
tB Input and last two lines of the truth table
are applicable to receivers 1 and 2 only
typical application
A
8
r - - - - - - -,Co 95n COAXIAL CABLE
Ir+~-rr=====~+-~~
95
L _ _ -.J8---"_J
1~M~4 _ _
4-47



LM75124
...'It
N
~ absolute maximum ratings
:E (Notes 1 and 2)
....I
Supply Voltage, VCC
7.0V
Input Voltage
R I nput with V CC Applied
7.0V
R Input with VCC not Applied
6.0V
A, B, or S Input
5.5V
Output Voltage
7.0V
Output Current
±100 mA
Continuous Total Power Dissipation at (or below)
25°C Free-Air Temperature (Note 5)
800 mW
Operating Temperature Range
Storage Temperature Range
O°C to +7So C
--6So C to +150°C
Lead Temperature (Soldering, 10 seconds)
300°C
operating conditions
Supply Voltage, VCC
High Level Output Current,
IOH
Low Level Output Current,
IOL
Operating Temperature, TA
MIN
4.75
a
MAX
5.25
-800
16
+75
UNITS
V
I'A
mA
°c
electrical characteristics (Note 3)
PARAMETER
,HHigh Level Input Voltage (V 1
A, B, orS
R
CONDITIONS
Low Level Input Voltage (V'L)
A, B, orS
R
HysteresIs (V T+ - VT-)
R
Input Clamp Voltage (V,)
A, B, orS
(Note 7)
Vee"" 5.0V, TA = 25°C
Vee = 5 OV, I, = -12 mA
Input Breakdown Voltage (V(BR) I)
A, B,arS
High Level Output Voltage (V OH )
Vee = 5 OV, I, = 10 mA
,HV =V,HMIN,V,L =V,LMAX,
10H = -SOOI1A (Note 4)
Low Level Output Voltage (VoLl
V'H =V,NMIN,V'L=V,LMAX,
10L = 16 mA (Note 4)
Input Current at Maximum Input Voltage
(I,) R
High Level Input Current (I'H 1
A, B, orS
R
V, = 7.0V
V, = 6.0V, Vee = a
V, = 4.5V
V, =3.11V
Low Level Input Current (lId
A, B,or S
V,=O.4V
Short Circuit Output Current (los)
Vee = 5 OV, TA = 25°C. (Note 6)
Supply Current (Ieel
Vee = 5.25V
MIN TYP MAX UNITS
2.0
1.7
O.S
0.7
0.2 0.4
-1.5
V
V
V
V
V
V
5.5 V
2.6 V
0.4 V
5.0 mA
5.0 mA
40 I1A
170 Jl.A
-0.1
-1.6
mA
-50
-100
mA
72 mA
switching characteristics Vee = 5.0V, TA = 25°C
PARAMETER
Propagation Delay Time, Low to High Level
Output from R Input (tPLH)
Propagation Delay Time, High to Low Level
Output from R Input (tPH cl
CONDITIONS
(See AC Test CircUit and SWitching
Time Waveforms)
MIN TYP MAX UNITS
20 30
ns
20 30
ns
Note 1: "Absolute MaXimum Ratings" are those values beydnd which the safety of the deVice cannot be guaranteed. Except for "Operatmg
Temperature Range" they are not meant to Imply that the deVices should be operated at these limits. The table of "Electrical Characteristics"
provides conditions for actual deVice operation.
Note 2: All currents Into device PinS are shown as positive, currents out of deVice pins shown as negative, all voltage values are referenced
with respect to network ground termmal, unless otherwise noted All values shown as max or min on absolute value baSIS.
Note 3: Mm/max limits apply across the guaranteed operatmg temperature range of O°C to +7SoC for LM75124, unless otherwise specified.
TYPlcals are for Vec '" S.OV, TA '" 2SoC. POSitive current IS defmed as current into the referE!nced pin.
Note 4: The output voltage and current limits are guaranteed for any appropnate combmatl'on of high and low inputs specified by the truth
table for the deSired output.
Note 5: For operatmg at elevated temperatures, the cavity 01 P package (J) must be derated based on a thermal resistance of +8SoC/W,
Junction to ambient. The molded DIP package (N) must be derated based on a thermal resistance of +150°C/W, junction to ambient.
Note 6: Note more than one output should be shorted at a time.
Note 7: HysteresIs IS the difference between the POSitive gOing Input threshold voltage, VT+' and the negative gOing Input threshold
voltage, VT_'
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